40 lines
1002 B
C
40 lines
1002 B
C
// XFAIL: hexagon,sparc
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// (due to not having native load atomic support)
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// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple mips-linux-gnu -emit-llvm %s -o - | FileCheck %s
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void foo(int x)
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{
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_Atomic(int) i = 0;
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_Atomic(short) j = 0;
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// Check that multiply / divides on atomics produce a cmpxchg loop
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i *= 2;
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// CHECK: mul nsw i32
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// CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4,)}}
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i /= 2;
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// CHECK: sdiv i32
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// CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4, )}}
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j /= x;
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// CHECK: sdiv i32
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// CHECK: {{(cmpxchg i16*|i1 @__atomic_compare_exchange\(i32 2, )}}
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}
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extern _Atomic _Bool b;
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_Bool bar() {
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// CHECK-LABEL: @bar
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// CHECK: %[[load:.*]] = load atomic i8, i8* @b seq_cst
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// CHECK: %[[tobool:.*]] = trunc i8 %[[load]] to i1
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// CHECK: ret i1 %[[tobool]]
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return b;
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}
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extern _Atomic(_Complex int) x;
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void baz(int y) {
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// CHECK-LABEL: @baz
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// CHECK: {{store atomic|call void @__atomic_store}}
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x += y;
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}
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